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Finding the Fourth Proportional to 111,577.92, 168,134.40 and 92,290.56

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Solution

The fourth proportional to 111,577.92, 168,134.40 and 92,290.56 is: 139,070.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,577.92 : 168,134.40 = 92,290.56 : x
  2. Step 2: Convert to fraction form
    111,577.92/168,134.40 = 92,290.56/x
  3. Step 3: Cross multiply
    111,577.92x = 168,134.40 × 92,290.56
  4. Step 4: Simplify right side
    111,577.92x = 15,517,217,931.26
  5. Step 5: Solve for x
    x = 15,517,217,931.26/111,577.92
  6. Step 6: Final answer
    x = 139,070.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.